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Finding the Fourth Proportional to 159,930.72, 220,710.96 and 99,537.12

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Solution

The fourth proportional to 159,930.72, 220,710.96 and 99,537.12 is: 137,365.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,930.72 : 220,710.96 = 99,537.12 : x
  2. Step 2: Convert to fraction form
    159,930.72/220,710.96 = 99,537.12/x
  3. Step 3: Cross multiply
    159,930.72x = 220,710.96 × 99,537.12
  4. Step 4: Simplify right side
    159,930.72x = 21,968,933,310.84
  5. Step 5: Solve for x
    x = 21,968,933,310.84/159,930.72
  6. Step 6: Final answer
    x = 137,365.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.